What does it mean when a relationship run its course?

Doesn't sound like it ever got started. Nothing about his behavior says he considers you his gf. He made no attempt to contact you for over two weeks? Does that sound like he was your boyfriend? You made the right decision to move on. He clearly had no interest. Some people are in our lives for a short period of time and we reap the benefit of it. Then it's time to let it go and time to meet new people. Don't hang on to baggage.